I'm reviewing this Driving is Why You're Fat graph and would like to find the data behind it, preferably the actual data and not just the ranks. The data sources are vaguely cited in the lower right corner. Another image source, but no more information at hyperakt.

Streetsblog is both a blog about (public) transportation and a network of grass root organisations promoting alternate (as in not passenger car) transport modes. I could not find any prominent study, statistic, survey or data source on their pages.